==================================================================
BUG: KASAN: slab-out-of-bounds in mcp2221_raw_event+0xf98/0x1030 drivers/hid/hid-mcp2221.c:852
Read of size 1 at addr ffff8881207dbfff by task syz-executor/9875
CPU: 0 UID: 0 PID: 9875 Comm: syz-executor Not tainted 6.13.0-rc4-syzkaller-00088-g594c82329eef #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:489
kasan_report+0xd9/0x110 mm/kasan/report.c:602
mcp2221_raw_event+0xf98/0x1030 drivers/hid/hid-mcp2221.c:852
__hid_input_report.constprop.0+0x312/0x440 drivers/hid/hid-core.c:2111
hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
__usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17f7/0x3960 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820
handle_softirqs+0x206/0x8d0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xfa/0x160 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:166 [inline]
RIP: 0010:syscall_enter_from_user_mode include/linux/entry-common.h:199 [inline]
RIP: 0010:do_syscall_64+0x9a/0x250 arch/x86/entry/common.c:79
Code: 00 48 8b 7d 08 e8 f6 44 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 76 41 72 fa 90 90 e8 ff 42 72 fa fb 65 48 8b 05 66 fe 12 79 <48> 8b 50 08 f6 c2 3f 0f 85 3c 01 00 00 90 90 41 81 fc d2 01 00 00
RSP: 0018:ffffc9000187ff28 EFLAGS: 00000202
RAX: ffff88811d023a80 RBX: ffffc9000187ff58 RCX: 1ffffffff14abb81
RDX: 0000000000000000 RSI: ffffffff8727fee0 RDI: ffffffff874735a0
RBP: ffffc9000187ff48 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8a561517 R11: 0000000000000000 R12: 000000000000003d
R13: 000000000000003d R14: 0000000000000000 R15: 0000000000000000
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f254fd9bf53
Code: 00 00 0f 1f 44 00 00 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 80 3d f1 05 1d 00 00 49 89 ca 74 14 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5d c3 0f 1f 40 00 48 83 ec 28 89 54 24 14 48
RSP: 002b:00007ffd52da0b28 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00000000000000fd RCX: 00007f254fd9bf53
RDX: 0000000040000001 RSI: 00007ffd52da0b5c RDI: 00000000ffffffff
RBP: 00007ffd52da0b5c R08: 0000000000032420 R09: 00007f254fc1a000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032
R13: 0000000000105a05 R14: 00007ffd52da0bb0 R15: 0000000000000bb8
Allocated by task 11026:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x6e/0x70 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4119 [inline]
kmem_cache_alloc_bulk_noprof+0x3ec/0xab0 mm/slub.c:5129
mt_alloc_bulk lib/maple_tree.c:181 [inline]
mas_alloc_nodes+0x2f1/0x8b0 lib/maple_tree.c:1275
mas_node_count_gfp+0x105/0x130 lib/maple_tree.c:1335
mas_node_count lib/maple_tree.c:1349 [inline]
mas_wr_preallocate lib/maple_tree.c:4270 [inline]
mas_insert lib/maple_tree.c:4303 [inline]
mas_alloc_cyclic+0xacf/0x1680 lib/maple_tree.c:4365
mtree_alloc_cyclic+0x172/0x1e0 lib/maple_tree.c:6523
simple_offset_add+0xc4/0x160 fs/libfs.c:293
shmem_mknod+0x123/0x240 mm/shmem.c:3684
lookup_open.isra.0+0x1158/0x14b0 fs/namei.c:3649
open_last_lookups fs/namei.c:3748 [inline]
path_openat+0x904/0x2d60 fs/namei.c:3984
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 11026:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x37/0x50 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2353 [inline]
slab_free mm/slub.c:4613 [inline]
kmem_cache_free+0x133/0x470 mm/slub.c:4715
mt_free_one lib/maple_tree.c:186 [inline]
mas_destroy+0x5a2/0x9e0 lib/maple_tree.c:5602
mas_alloc_cyclic+0xe9e/0x1680 lib/maple_tree.c:4375
mtree_alloc_cyclic+0x172/0x1e0 lib/maple_tree.c:6523
simple_offset_add+0xc4/0x160 fs/libfs.c:293
shmem_mknod+0x123/0x240 mm/shmem.c:3684
lookup_open.isra.0+0x1158/0x14b0 fs/namei.c:3649
open_last_lookups fs/namei.c:3748 [inline]
path_openat+0x904/0x2d60 fs/namei.c:3984
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff8881207dbe00
which belongs to the cache maple_node of size 256
The buggy address is located 255 bytes to the right of
allocated 256-byte region [ffff8881207dbe00, ffff8881207dbf00)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8881207da600 pfn:0x1207da
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x200000000000040(head|node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000040 ffff888100091000 ffffea0004dbc080 dead000000000002
raw: ffff8881207da600 0000000000100005 00000001f5000000 0000000000000000
head: 0200000000000040 ffff888100091000 ffffea0004dbc080 dead000000000002
head: ffff8881207da600 0000000000100005 00000001f5000000 0000000000000000
head: 0200000000000001 ffffea000481f681 ffffffffffffffff 0000000000000000
head: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 12629, tgid 12629 (modprobe), ts 926925567640, free_ts 923467376453
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0xe76/0x2b90 mm/page_alloc.c:3476
__alloc_pages_noprof+0x21c/0x22a0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0xeb/0x400 mm/mempolicy.c:2269
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab mm/slub.c:2589 [inline]
new_slab+0x2c9/0x410 mm/slub.c:2642
___slab_alloc+0xd1d/0x16e0 mm/slub.c:3830
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
__slab_alloc_node mm/slub.c:3995 [inline]
slab_alloc_node mm/slub.c:4156 [inline]
kmem_cache_alloc_noprof+0x1fd/0x3b0 mm/slub.c:4175
mt_alloc_one lib/maple_tree.c:176 [inline]
mas_alloc_nodes+0x18b/0x8b0 lib/maple_tree.c:1253
mas_node_count_gfp+0x105/0x130 lib/maple_tree.c:1335
mas_preallocate+0x53f/0xce0 lib/maple_tree.c:5545
vma_iter_prealloc mm/vma.h:349 [inline]
__split_vma+0x474/0x1130 mm/vma.c:447
vms_gather_munmap_vmas+0x391/0x16b0 mm/vma.c:1288
__mmap_prepare mm/vma.c:2241 [inline]
__mmap_region+0x31e/0x2620 mm/vma.c:2443
mmap_region+0x127/0x320 mm/mmap.c:1348
do_mmap+0xc00/0xfc0 mm/mmap.c:496
page last free pid 5224 tgid 5224 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_page+0x661/0xe40 mm/page_alloc.c:2659
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x4e/0x70 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
__kmalloc_cache_noprof+0x153/0x3e0 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
kobject_uevent_env+0x265/0x1870 lib/kobject_uevent.c:540
__device_release_driver drivers/base/dd.c:1285 [inline]
device_release_driver_internal+0x51b/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
device_del+0x396/0x9f0 drivers/base/core.c:3854
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
Memory state around the buggy address:
ffff8881207dbe80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881207dbf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881207dbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff8881207dc000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8881207dc080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: 00 48 8b add %cl,-0x75(%rax)
3: 7d 08 jge 0xd
5: e8 f6 44 00 00 call 0x4500
a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
14: 90 nop
15: e8 76 41 72 fa call 0xfa724190
1a: 90 nop
1b: 90 nop
1c: e8 ff 42 72 fa call 0xfa724320
21: fb sti
22: 65 48 8b 05 66 fe 12 mov %gs:0x7912fe66(%rip),%rax # 0x7912fe90
29: 79
* 2a: 48 8b 50 08 mov 0x8(%rax),%rdx <-- trapping instruction
2e: f6 c2 3f test $0x3f,%dl
31: 0f 85 3c 01 00 00 jne 0x173
37: 90 nop
38: 90 nop
39: 41 81 fc d2 01 00 00 cmp $0x1d2,%r12d